Exploring Tea's Origins: IndiaTasting Teas at Tetley, CalcuttaNo matter where I travel in India, the common cup of hospitality is tea. In the workplace or train station, you'll find inexpensive chai steeped with spices, milk, and sugar. In hotels, your teacup might hold a single estate Darjeeling, Nilgiri, or Assam tea.  It was in the…